Patent Classification Explorer PCE

DIFF Main Group

F22D 3/00

Accumulators for preheated water

Introduced: September 1968

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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F22D 3/02 arranged within combustion chambers IPC+CPC Available in IPC and CPC
F22D 3/04 combined with steam accumulators IPC+CPC Available in IPC and CPC
F22D 3/06 directly connected to boilers IPC+CPC Available in IPC and CPC
F22D 3/08 specially adapted for locomotives IPC+CPC Available in IPC and CPC